v3.26.1
Related Party Transactions (Details) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2026
Sep. 30, 2025
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Related Party Transaction [Line Items]            
Long-term debt $ 250,909,000   $ 250,909,000   $ 250,909,000  
Accounts payable 6,258,000 $ 5,836,000 6,258,000   6,258,000  
Nottingham Creations and Sherwood Forest Creations LLC            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     0 $ 3,974 0 $ 6,754
TW Mechanical LLC            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     7,550 681 7,550 1,401
Related Party | Allen Chhay and Bradley Chhay            
Related Party Transaction [Line Items]            
Proceeds from related party debt 350,000 150,000        
Related Party | Nottingham Creations and Sherwood Forest Creations LLC            
Related Party Transaction [Line Items]            
Accounts payable 0 3,312 0   0  
Related Party | TW Mechanical LLC            
Related Party Transaction [Line Items]            
Accounts payable $ 6,565 0 $ 6,565   $ 6,565  
Related party, ownership percentage 50.00%   50.00%   50.00%  
Related Party | TW Mechanical LLC | Third-Party General Contractor            
Related Party Transaction [Line Items]            
Related party transaction, amounts of transaction     $ 0 $ 0 $ 0 $ 0
Commercial Bank Indebtedness            
Related Party Transaction [Line Items]            
Long-term debt $ 135,200,000 $ 139,600,000 $ 135,200,000   $ 135,200,000